Cast metal hopper door



May 19, 1931. G. G. GILPIN 1,805,660

GAST METAL HOPPER DOOR Filed Jan. 27, 1928 '2 Sheets-Sheet 2 |6 25. 25 wr' l HL '/5 E x im:

z l s rm: 5 -5 H Il Patented May 19,y 1931 1uNrriaznv Afs'rA'rEs isf frs.

' GARTH e.

GILPIN, OF RIVERSIDE, ILLINOIS, AssIGLIoE TOUNION METALPEODUOTS. OOMrANY, OE CHICAGO, ILLINOIS, AcoEEoRA'rION or DELAWARE- vOASI* METAL HorrEa'nOoR *Appiica-tion med lJanuary 27, 1928. serial No. 249,999.

f My 'invention relates toy the construction- Of railway cars havlng drop doors, such as,l

hopper cars, hopperV gondola cars, dropfbottom or general service gondola cars, mill type gondolas having drop end doors, -or the like, having "a door forminga part of thecar for retaining the load therein, which dooris provided with hinges adjacent one ofitsedges and is-capable of being droppedwor swung open; Any means (3f-raising the doorv to the closed position and anymeans Vfor lockingand releasing the door lmaybe employed with my device. f

A door for this purposemust be yery strong;

anddurable because: v ,f

' First, it is la-part'of the ioor of the car and as such must sustainthe','load aswell as they impact blow of the load when the cari's in motion. Second, #thefcar is' frequentlyY loaded fro-rn chutes or tipplesfrorn a` height of ten feet or more, causingfthe load to be dropped directly upon the doors. Third, clam shell buckets are frequentlyl used tounload such 'cars and it is not uncommon forthese buckets to rest upon andv drag overl'theA doors):r

Fourth, when the doo-rfsudde'nly comes to rest after being dropped, it is' not only subjected to a severe shock but it `must sustain j ,A the severe'impact thrust yof the load which f 4`3o of course vfollows th'e"'door.'V F ifth, as the load is theoretically equallydistr'ibuted, the door must be strong over its entire Varea. and.V must be capable of transmitting the resulting stressesto the car body without much 'deflec-f tion and no substantial distortion; ,'AA'nybend ing of the door Vor drooping of thev corners.

would cause'a leak of .the lading,especially of such, line material as sand, chatsyetc. Any bending or warpingmight interfere'with the complete closing and locking of the door.

An ,object of the invention'is :to provideA aj door ofcast metal, preferably'malleable iron or cast steel, having apa-nel portion formingT a floor or wall'of a car and lto reinforce suc h` panel with castl integral members andi tosform and shape'the entire door so that it will no t be deformed by warping when cooling, and furthermore, willeliminate shrinkageucra'cksj andinternal stresses. f

` Both castmetal and vannealed cast metal offer greater resistance toi"corrosin similar chemicalnactions).,thanfrolled steel, owingfto' the texture ofgthe metal. "When-i rolled steel is vdeformedilo-etvveerclies er heated or not) 'the-,fibres on the tension side :of the'metal'are opened' up or` separated zby Y Stretching', while the fibres on the compression `side ofthe metal .are forced 'together and up?"` set. yBoth such vopening upv and' "upsetting` more capable to resist corrosion,l Railway carsy are not' only subject tothe `usual' atmos` phericconditions b-ut aresubj ect to ,chemicalyf actions of certain loads, such as, forinstanc'e, wet coal ywhichforms 'sulphuri'c acid. l.In ythe drawings? j j t; l Fig. 1 shows a portionof a railway carfwith'T my device applied thereon. ,Y s IFig'fis a section Online of'lg. i Q Fig isa section on vline of Figlllf V Figf4 'is a ,detail of the dem from. .the underside. v 'A .Y Fig. 5 is a section on linee-e5 of Fig. 4l., ",Fig,.j 6 is a section on lined-#6 of Fig. 4,l Y Figs. 7 to 10 inclusive show various modi-v. ied formsofj the invention. s

. 1 Inv casting l a s, door having an its sides, vvthe liquidl'metal is preferably pouredithrough" a plurality of gates 'into the panel portionof the.' door from whencefitL tion-'ofthe 'talige'k therefore, 0001s instand.. offers resistanceyto lthe contraction. exerted.'

' solpending'flrange extendingfaroundall fourofvk Y by the cooling panelportio'n.' Y,If a transverse f integral rib'is provided which merges intof Y oppositeV por'tionslofA the integral iange,the cooling of thev panel portionwouldbreak oneV end, (or maybe both'ends) of thetransverse,

rib 'away lfrom" the integral yflange or 1 cause' .aY l

fact is a triiie larger on all sides than the opening so as to provide a lap joint between the door and the car frame member. rlihe doors areuhinged to .the .center .construction and aresupported adjacent the side wall by the rai sing or locking mechanism. Any convenient stop may be used to limit the downward movementof the door.

.The .Cast metal door comprises a panel 5 with'flanges adjacent opposite margins but which preferably are provided on all four sides of the door to form a continuous dependinglintegral Hangs 6 extending `around all f onr sides of the panel. The door is provided with one ormore reinforcing ribs 7 .theirjopposi'te .ends terminating within the anel adjacent opposite portions of the depen ing lflange so .that any load imposed upon the rib iscarried to points near the .depending flange. "The ribsl preferably increase in depth towardltheir middle portion.` Iprefer also to provide pairs. of aligned webs 9 springing `from the panel and extendingtoward and merging into the depending flange 6 which webspreferably overlap and are alternatewith therein-forcing ribs 7 Webs of this nature will allow for the. contraction of the cooling metal without causing shrinkage cracks.

the-panel portion of the door cools there is .e tendeney to Aelongate the transverse-reinforcing ribs causing a stretching of the tension side .of the rib, therefore, I prefer to form them on .the .arcs .of a circle or'y toy wave them, .or 'broadly Speaking to form .them in s onie other than'a straight line, as shown 1 0-,1,1 n,Fgs.7 .and 8'. I

Y Fig. 0 shows a construction having two reT info rcing ribs 15%1- 6 which cross each other edjaoerit the middle of J@he panel-.and termi.- nate intol the panel adjacent. the corners of the door. I alsowpre'fer tol provide webs 17%'.418 springing from the panel and merginto yportions ,ofv the depending lange which preferably overlap the ends of the reinforcing ribs. '.Fig. l0 Vis a lmodification of Fig. wherein the crossing ribs 20f2l are arcuate (lor not straight.)

4The' hinge lugs 2 5 are cast integral with the depend-ing .flange -6 and .the papel,` So oe toreinforce the as well as being a hinge 111g, andsome of the renforohg ribs Prof- Y embly terminate ,into the/panel adgiooept the integral hinge lugs so as to carry their stresses to the hinges. The hinge lugs are shown on one side of each of Figs. 7 to 10 inclusive7 but may be applied to any other side than that shown, if desired. The door raising brackets 28 fare preferably positioned on the inside of the flange 6 and are cast integral with the flange 6 and the panel 5 and are pref- Verably positioned on the opposite side of the Adoor `from the .hingelugs 25.

rThe `accofmp anying drawings illustrate the preferred form of the invention, though it is tobe understood that the invention is not limited to the exact details of construction shown and"described,' as it is obvious thatvariousmodifications thereof Within the scope of the claims will occur to .persons skilled in.

adjacent opposite margins thereof and rein-` forcing rloe with their opposite .endetermh nating within the panel adjacent said flanges.

A. hinged door for .e .hallway oelfeon- Sistine-0f en ptos-rel pasting -oompreps e panel with danses .adjaoent opposite, margine; thereof and Curved reinforcing ribs with vtheir oppeeiteehds termi-noting Within the panel edjeoehtsodehges- 3,- A. hinged .door `for a railway .ear Con- Sistine' of an -ptegfeloeetos Comprising 'a panel with a ooptihuoue .depehdngflange adjacent its perimeter and Curved-reinforcing ribs .with dler .opposite ende terminating Within the panel adjeoeot theoppoeite poi-1- tions of the. Hooge. heelthe .Corners of ,the door..`

4,- A. hin-sed dooryfor .e fealway .oar .oon- Sethg of .an integral Casting Comprising a panel having .e Smooth upper Surface with danses .adjacent opposite margine thereof., .refnforong. ribs with their opposite ends terminating within the vpanel adjacent said flanges, and Webs springing from the panel and merging into.' oneof the flanges- 5, A. hinged door for railway car consisting of an Aintegral casting comprising a panel with flanges adjacent opposite margins thereof, reinforcing ribs with their .opposite ends terminating within the panel adjacent Said ta-anges, and webs springing from the panel and merging into one of the flanges which overlap the reinfon-gingribs.A

6, A hinged door for aV 4railwaycar lconsisting of an integral casting kcorn-prising a panel with .flanges .adjacent opposite margine'. thereof, reinforcing ribs with their opposite endsftermineting Within the paneladjaeent said flanges, and webs springing from the paneland merging into one yof the flanges 1 which webs overlap and arealternate with the reinforcing ribs.

7. A hinged door for a railway car consisting of an integral casting comprising a panel with flanges adjacent opposite margins thereof, reinforcing ribs with their opposite ends terminating within the vpanel adjacent said flanges, and pairs of aligned webs springing from the panel and merging into oneof the flanges whichl webs overlap and are alternate with the reinforcing ribs. p

8. A hinged door for a railway car yconsisting of an integral casting comprising a panel with a continuous depending flange adjacent its perimeter, reinforcing ribs with `their opposite ends terminating within the panelfadjacent the opposite portions of the flange, and webs springing from the panel and merging into the flange whichwebs overlap the reinforcing ribs and other webs springing from the panel and merging into other portions of the flange.

9. A hinged door for a railway car consisting of an integral casting comprising a panel with flanges adjacent opposite margins thereof, curved reinforcing rribs with their opposite ends terminating within the panel adjacent said flanges, and curved webs springing from the panel and merging into one of the flanges 12. A hinged door for a railway car con` sisting Vof an integral casting comprising a panel, a flange adjacent the margins thereof,

apair of reinforcing ribs which cross each' other and terminate into the panel adjacent the corners of the door, and websspringing from the panel and merging into .portions of the flange. Y .Y

13. A hinged door for arailway car consisting of -an integral casting comprising a panel, a flange adjacent the margins thereof,

a pair of reinforcing ribs whichcross each other and terminate into the panel adjacent the corners of the door, and webs springing from the'panel adjacent the intersection of the reinforcing ribs and merging into vporj tions of the flange.

14. A hinged door for a railway car consisting ofan integralcasting comprising a panel, a ange adjacent the margins thereof, and a pair of semi-circular reinforcing ribs which larly disposed to for a railway car conj cross each other and terminate into the panel adjacent the corners of the door.

15. vA hinged door for a railway car consisting of an integral casting comprising a panel, a'flange adjacent lthe margins thereof, a pair of semi-circular'reinforcing ribs which cross each other and terminate into the panel adjacent the corners of the door and webs s ringing from the anel and'mer in into l P s e P g g v V75 portions of the flange. A

16. A hinged door for a railway car consisting ofran integral casting comprising a panel with flanges adjacent opposite margins thereof and hinge lugs positioned on the inside of one of said flanges andcast integral with said flangev and said panel, and door raising brackets positioned inside of the other of said flanges and cast integral with and the panel.. 4 j

17. A hinged door for a railway car consisting of an integral casting comprising a panel having a smooth surface on one side,

the flange J reinforcing ribs terminating adjacent the op V Y posite margins of the panel, and other reinforcing ribs` positioned between and .anglithe first mentioned ribs. v GARTH G. GILPIN.

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